2 * linux/arch/arm/mach-omap2/devices.c
4 * OMAP2 platform device setup/initialization
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 #include <linux/gpio.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/platform_device.h>
16 #include <linux/clk.h>
17 #include <linux/err.h>
18 #include <linux/slab.h>
20 #include <linux/pinctrl/machine.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/map.h>
25 #include <linux/omap-dma.h>
28 #include "omap_hwmod.h"
29 #include "omap_device.h"
37 #define L3_MODULES_MAX_LEN 12
40 static int __init omap3_l3_init(void)
42 struct omap_hwmod *oh;
43 struct platform_device *pdev;
44 char oh_name[L3_MODULES_MAX_LEN];
47 * To avoid code running on other OMAPs in
50 if (!(cpu_is_omap34xx()) || of_have_populated_dt())
53 snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main");
55 oh = omap_hwmod_lookup(oh_name);
58 pr_err("could not look up %s\n", oh_name);
60 pdev = omap_device_build("omap_l3_smx", 0, oh, NULL, 0);
62 WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
64 return PTR_ERR_OR_ZERO(pdev);
66 omap_postcore_initcall(omap3_l3_init);
68 static inline void omap_init_sti(void) {}
70 #if IS_ENABLED(CONFIG_SPI_OMAP24XX)
72 #include <linux/platform_data/spi-omap2-mcspi.h>
74 static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused)
76 struct platform_device *pdev;
77 char *name = "omap2_mcspi";
78 struct omap2_mcspi_platform_config *pdata;
80 struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
82 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
84 pr_err("Memory allocation for McSPI device failed\n");
88 pdata->num_cs = mcspi_attrib->num_chipselect;
89 switch (oh->class->rev) {
92 pdata->regs_offset = 0;
95 pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
98 pr_err("Invalid McSPI Revision value\n");
104 pdev = omap_device_build(name, spi_num, oh, pdata, sizeof(*pdata));
105 WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n",
111 static void omap_init_mcspi(void)
113 omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
117 static inline void omap_init_mcspi(void) {}
121 * omap_init_rng - bind the RNG hwmod to the RNG omap_device
123 * Bind the RNG hwmod to the RNG omap_device. No return value.
125 static void omap_init_rng(void)
127 struct omap_hwmod *oh;
128 struct platform_device *pdev;
130 oh = omap_hwmod_lookup("rng");
134 pdev = omap_device_build("omap_rng", -1, oh, NULL, 0);
135 WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n");
138 static void __init omap_init_sham(void)
140 struct omap_hwmod *oh;
141 struct platform_device *pdev;
143 oh = omap_hwmod_lookup("sham");
147 pdev = omap_device_build("omap-sham", -1, oh, NULL, 0);
148 WARN(IS_ERR(pdev), "Can't build omap_device for omap-sham\n");
151 static void __init omap_init_aes(void)
153 struct omap_hwmod *oh;
154 struct platform_device *pdev;
156 oh = omap_hwmod_lookup("aes");
160 pdev = omap_device_build("omap-aes", -1, oh, NULL, 0);
161 WARN(IS_ERR(pdev), "Can't build omap_device for omap-aes\n");
164 /*-------------------------------------------------------------------------*/
166 #if IS_ENABLED(CONFIG_VIDEO_OMAP2_VOUT)
167 #if IS_ENABLED(CONFIG_FB_OMAP2)
168 static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = {
171 static struct resource omap_vout_resource[2] = {
175 static struct platform_device omap_vout_device = {
177 .num_resources = ARRAY_SIZE(omap_vout_resource),
178 .resource = &omap_vout_resource[0],
182 int __init omap_init_vout(void)
184 return platform_device_register(&omap_vout_device);
187 int __init omap_init_vout(void) { return 0; }
190 /*-------------------------------------------------------------------------*/
192 static int __init omap2_init_devices(void)
194 /* Enable dummy states for those platforms without pinctrl support */
195 if (!of_have_populated_dt())
196 pinctrl_provide_dummies();
198 /* If dtb is there, the devices will be created dynamically */
199 if (!of_have_populated_dt()) {
201 * please keep these calls, and their implementations above,
202 * in alphabetical order so they're easier to sort through.
213 omap_arch_initcall(omap2_init_devices);
215 static int __init omap_gpmc_init(void)
217 struct omap_hwmod *oh;
218 struct platform_device *pdev;
219 char *oh_name = "gpmc";
222 * if the board boots up with a populated DT, do not
223 * manually add the device from this initcall
225 if (of_have_populated_dt())
228 oh = omap_hwmod_lookup(oh_name);
230 pr_err("Could not look up %s\n", oh_name);
234 pdev = omap_device_build("omap-gpmc", -1, oh, NULL, 0);
235 WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
237 return PTR_ERR_OR_ZERO(pdev);
239 omap_postcore_initcall(omap_gpmc_init);